Home / 31,409.67-43,350.74-21,331.25

Finding the Fourth Proportional to 31,409.67, 43,350.74 and 21,331.25

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Solution

The fourth proportional to 31,409.67, 43,350.74 and 21,331.25 is: 29,440.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,409.67 : 43,350.74 = 21,331.25 : x
  2. Step 2: Convert to fraction form
    31,409.67/43,350.74 = 21,331.25/x
  3. Step 3: Cross multiply
    31,409.67x = 43,350.74 × 21,331.25
  4. Step 4: Simplify right side
    31,409.67x = 924,725,511.76
  5. Step 5: Solve for x
    x = 924,725,511.76/31,409.67
  6. Step 6: Final answer
    x = 29,440.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.